CN1690438A - Electronic apparatus having the pump - Google Patents

Electronic apparatus having the pump Download PDF

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Publication number
CN1690438A
CN1690438A CNA2005100652909A CN200510065290A CN1690438A CN 1690438 A CN1690438 A CN 1690438A CN A2005100652909 A CNA2005100652909 A CN A2005100652909A CN 200510065290 A CN200510065290 A CN 200510065290A CN 1690438 A CN1690438 A CN 1690438A
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CN
China
Prior art keywords
pump
rotary component
housing
electronic equipment
pump chamber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CNA2005100652909A
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Chinese (zh)
Inventor
富冈健太郎
畑由喜彦
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Toshiba Corp
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Toshiba Corp
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Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Publication of CN1690438A publication Critical patent/CN1690438A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0673—Units comprising pumps and their driving means the pump being electrically driven the motor being of the inside-out type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001—Technical content checked by a classifier
    • H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)

Abstract

An electronic equipment (1) includes the following components: a casing (10) which is provided with a heating element (31); and a cooling device (40) that includes a heat-dissipating part (50), a circulating gateway (60) thermally connected to the heat-dissipating part (50), and a pump (100) which compulsively circulates the liquid in the circulating gateway (60) and is provided with a heat receiving part (122) thermally connected to the heating element (31), the pump (100) includes the following components: a pump casing (101) which comprises a heat receiving part (122) and a pump chamber (118); a stator (103b); and a rotary part (102) which includes an agitating part (107) that is used for agitating the liquid in the pump chamber (118) and a magnet (103a) included in the rotary part (102), and the rotary part (102) conveys the liquid to the circulating gateway (60).

Description

Electronic equipment with pump
Technical field
The present invention relates to the pump in a kind of cooling unit that is arranged in the liquid cooling type, cooling unit uses for example central processing unit (CPU) (CPU) of liquid refrigerant cooling heating element, and relates to a kind of electronic equipment that comprises this pump.
Background technique
As the pump described at Japanese patent application KOKAI communique No.2003-343492 is known.This pump at one end mask has recessed portion and comprises the discoidal impeller with a plurality of blades in the other end.This impeller has the magnetic field generating portion on the internal edge of recessed portion.The magnetic field generating portion is fixed to by the ring-type element that will comprise permanent magnet on the recessed portion of the impeller that is formed by resin and constitutes.About the magnetic field generating portion, impeller is formed by plastic magnet, and is magnetized corresponding to the part of magnetic field generating portion.
As another pump described at Japanese patent application KOKAI communique No.11-166500 is known.Be well known that this pump has the motor of a rotor that comprises stator with a plurality of coils and made by permanent magnet.Make stator so that form molded stator by resin mold.Make rotor so that form columniform molded rotor by resin mold.The blade of forming impeller is outstanding from the external margin of molded rotor.
In addition, in being used for the central processing unit of electronic equipment (CPU), improve along with the speed of handling or multi-functional and increase at the run duration heat.In recent years, as this hot countermeasure, the electronic equipment that comprises the cooling unit of so-called liquid cooling type is actually used.This device is by having the liquid refrigerant cooling CPU that is higher than air specific heat.In this cooling unit, need have stable pump performance and can the endurance pump of cooling heating element satisfactorily.
In order to obtain the stability of pump, pump preferably forms by this way, so as the motor by the rotor magnet that has stator and forms by permanent magnet make rotary component for example impeller rotate.Yet, described in Japanese patent application KOKAI communique No.2003-343492 like that, be fixed in the pump that constitutes on the recessed portion of the impeller that is formed by resin by the ring-type element (rotor magnet) that will be made up of permanent magnet, rotor magnet is exposed in the liquid refrigerant in the pump chamber.Therefore, in the pump that forms by this way, rotor magnet is corroded by liquid refrigerant easily.When rotor magnet was corroded by liquid refrigerant, the performance of motor may reduce, and liquid refrigerant is contaminated, and the cooling effect of refrigeration agent reduces.
In addition, in the pump described in the Japanese patent application KOKAI communique No.11-166500, stator is made by resin mold, forms the external margin upper process of the blade of impeller at columniform molded rotor, and therefore is difficult to make the pump miniaturization.Therefore, the pump that is difficult to form by this way is installed to by being provided with in intensive relatively mode on the electronic equipment that different elements constitutes.
Summary of the invention
The present invention is modified in view of the situation, and its objective is, provide can be for a long time the electronic equipment of cooling heating element satisfactorily.
According to the electronic equipment of one aspect of the present invention, a kind of electronic equipment is provided, it comprises:
Housing, described housing has heater element; And
Cooling unit, described cooling unit comprise radiator portion, be thermally connected to the peripheral passage of radiator portion and circulation of fluid and have the pump of hot connecting in the hot joining receiving portions of heater element in the ring path forcibly,
It is characterized in that described pump comprises:
Pump case, described pump case has hot joining receiving portions and pump chamber;
Stator; And
Rotary component, described rotary component have stirring part that is used for stirring fluid in pump chamber and the magnet that is included in the rotary component, and rotary component transports fluid in the peripheral passage.
According to one aspect of the present invention, can obtain the electronic equipment of cooling heating element satisfactorily of a kind of endurance.
Description of drawings
The accompanying drawing of incorporating into and constituting a specification part shows embodiments of the invention, and together with above general introduction and the detailed description to embodiment given below, is used for explaining principle of the present invention.
Fig. 1 is the perspective view that illustrates according to the portable computer of first embodiment of the invention;
Fig. 2 is the perspective view of Fig. 1 portable computer of watching from a plurality of exhaust port sides of first housing;
Fig. 3 illustrates the plan view that is included in the refrigeration plant in first housing;
Fig. 4 is the perspective exploded view of pump;
Fig. 5 is the perspective view that has omitted pump in the situation of second lid therein;
Fig. 6 is the perspective view that an example of another rotary component that can be arranged in the pump is shown;
Fig. 7 is the sectional view that cuts off along Fig. 3 center line VII-VII; And
Fig. 8 is the sectional view that is illustrated in according to the position concerns between pump and the CPU in the portable computer of second embodiment of the invention.
Embodiment
To Fig. 7 first embodiment of the present invention is described below with reference to Fig. 1.It is a kind of portable computer 1 of electronic equipment that Fig. 1 and 2 shows.Portable computer 1 comprises master unit 2 and display unit 3.Master unit 2 comprises first housing 10 with flat box shape.First housing 10 comprises diapire 11a, upper wall 11b, antetheca 11c, right side wall and left side wall 11e, 11d and rear wall 11f.
As shown in Figure 1, upper wall 11b has palm platform (palm rest) 12 and keyboard joint 13.Keyboard joint 13 is arranged in the back of palm platform 12.Keyboard 14 is connected on the keyboard joint 13.Antetheca 11c, right side wall and left side wall 11e, 11d and rear wall 11f have formed peripheral wall along the peripheral direction of first housing 10.
As shown in Figure 2, a plurality of exhaust ports 15 are formed in the peripheral wall of first housing 10, for example among the rear wall 11f.These exhaust ports 15 are set to delegation on the width direction of first housing 10.
As shown in Figure 1, display unit 3 comprises second housing 20 with a flat box shape and is the LCD flat board 21 of display board.LCD flat board 21 is comprised in second housing 20.LCD flat board 21 has the screen 21a of indicated image.The screen 21a of LCD flat board 21 is exposed on the outside of second housing 20 by the opening in the front that is formed on second housing 20 22.
Second housing 20 is supported on the rearward end of first housing 10 via the hinge (not shown).Therefore, display unit 3 can be turned to a closed position, these parts are placed by this way on this position, so that from top covering palm platform 12 and keyboard 14, with can be turned to an open position, these parts are opened by this way on this position, so that expose palm platform 12, keyboard 14 and screen 21a.
As shown in Figure 3, printed circuit board (PCB) 30 is comprised in first housing 10.As shown in Figure 7, the diapire 11a of the printed circuit board (PCB) 30 and first housing 10 arranges abreast.The CPU31 that is heater element is installed on the end face of printed circuit board (PCB) 30.CPU31 is made up of microprocessor, and this microprocessor is the core of portable computer 1.
CPU31 has bottom substrate 32 and IC chip 33, and this IC chip layout is at the top substrate of bottom substrate 32 middle part and have the flat square shape.At run duration, the enhancing of handling acceleration or function causes the thermal power of IC chip 33 very big, therefore needs cooling so that keep stable operation.
As shown in Figure 3, the cooling unit 40 of liquid cooling type is installed in this portable computer 1, and these cooling unit 40 usefulness liquid refrigerants are antifreeze liquid cooling CPU31 for example.Cooling unit 40 is included in first housing 10.Cooling unit 40 has comprised pump 100, radiator portion 50, peripheral passage 60, electric fan 70 and the analog of hot joining receiving portions and heat-exchanging part function.
Shown in Fig. 4,5 and 7, pump 100 makes refrigeration agent circulate in peripheral passage 60 forcibly, and comprises pump case 101, the rotary component 102 that also can be used as the hot joining receiving portions, the motor 103 with rotor magnet 103a and stator 103b and control substrate 104.
Pump case 101 comprises housing main body 110, first lid 111 and second lid 112.Housing main body 110 has the flat box shape bigger than CPU31 size, and has the recessed portion 113 that is open upwards.
Housing main body 110 comprises main body 121 and the hot dash receiver 122 with frame shape, and this hot dash receiver is a hot joining receiving portions, is used for the opening end sealing under shed of liquid-tight mode with main body 121.That is to say that recessed portion 113 is limited by the internal surface of main body 121 and the upper surface of hot dash receiver 122.The hot dash receiver 122 that also can be used as recessed portion 113 diapires is towards CPU31.The lower surface of hot dash receiver 122 forms the heat absorbing surface 122a on plane.Preferably for example copper, aluminium and aluminum alloy form hot dash receiver 122 by the metallic material with high thermal conductivity.O type ring 124 is arranged between main body 121 and the hot dash receiver 122.It is pointed out that housing main body 110 can have overall structure.
First lid 111 that is formed by resin seals the opening end of recessed portion 113 in the Proof mode of liquid.O type ring 123 is arranged between the housing main body 110 and first lid 111.The upper surface of first lid 111 has the stator that comprises recessed portion 115, and this recessed portion comprises stator 103b and comprises the control substrate of recessed portion 116, and this recessed portion comprises control substrate 104.
The inside of pump case 101 promptly is divided into pump chamber 118 by recessed portion 113 and first lid, 111 region surrounded and accumulates the reserve tank 119 of liquid refrigerant by ring wall 117.Next door 117 forms with housing main body 110 (main body 121 in the present embodiment) is whole.
Pump chamber 118 be arranged in a bight in four bights of pump case 101 near.That is, the central position of pump chamber 118 deviates from the center of pump case 101.Reserve tank 119 is arranged in such a way, so as from its excess-three bight in four bights of pump case 101 around pump chamber 118.Permission through-flow passage ports 130 between pump chamber 118 and reserve tank 119 is formed in the next door 117.
Housing main body 110 (main body 121 in the present embodiment) is equipped with suction pipe 131 and discharge tube 132.Suction pipe 131 and discharge tube 132 are horizontally disposed with betwixt with interval.The upstream extremity of suction pipe 131 is outwards outstanding via the sidewall of housing main body 110 (main body 121 in the present embodiment).The downstream of suction pipe 131 is opened wide in reserve tank 119, and towards the next door 117 passage ports 130.
The downstream of discharge tube 132 is outwards outstanding via the sidewall of housing main body 110 (main body 121 in the present embodiment), and aims at the upstream extremity of suction pipe 131.The upstream extremity of discharge tube 132 opens wide in pump chamber 118 by next door 117.
As best shown in Figure 7, rotary component 102 have disc-shape rotating part 102b and with the integrally formed running shaft 102a of rotating part 102b.Rotating part 102b have towards the surface of hot dash receiver 122 (this surface will be called lower surface hereinafter) and with the opposed surperficial 108b of lower surface 108a (this surface will be called upper surface hereinafter).Rotary component 102 is comprised in the pump chamber 118 with this appearance heat (posture), and wherein the axis of running shaft 102a and hot dash receiver 122 intersect for example right angle.In addition, for rotary component 102, running shaft 102a is rotatably supported under this kind situation by first lid 111 and hot dash receiver 122, and wherein running shaft 102a extends to first lid 111 and hot dash receiver 122.
Motor 103 makes rotary component 102 rotations, and has rotor magnet 103a and stator 103b.Rotor magnet 103a for example is made up of the permanent magnet of annular, and wherein a plurality of negative electrodes and anode magnetize mutually.Rotor magnet 103a and rotary component 102 are fixed on the rotary component 102 coaxially, and are included in the pump chamber 118.In the magnet outer surface,, be rotated parts 102 by this way and cover, magnet is not contacted with liquid refrigerant in the pump chamber 118 towards at least a portion zone of the rotor magnet 103a of pump chamber 118.In the present embodiment, the whole zone of rotor magnet 103a outer surface is rotated parts 102 coverings.
In detail, rotor magnet 103a is arranged in such a way, so that extend and project upwards along the peripheral edge of rotating part 102b upper surface 108b, and a part that is rotated parts 102 covers.Rotary component 102 for example is molded into/forms by embedding rotor magnet 103a.
That is to say that rotating part 102b has along the peripheral edge layout of upper surface 108b and at the outstanding projection 109 of the direction (make progress) opposite with the direction (downwards) of hot dash receiver 122.Rotor magnet 103a is arranged in the projection 109.It is to be noted, in the present embodiment, rotor magnet 103a forms by this way, make magnet with direction that running shaft 102a intersects vertically on length less than the length on the direction parallel with running shaft 102a, and section configuration is the vertical long rectangle (as shown in Figure 7) of.
Rotary component 102 has the stirring part 107 that is used for stirring pump chamber 118 liquid refrigerants on the lower surface 108a of rotating part 102b and at least one side of upper surface 108b.When stirring lower surface 108a that part 107 is arranged in rotary component 102 and go up, liquid refrigerant can feed satisfactorily hot dash receiver 122 near.Therefore, when stirring lower surface 108a that part 107 is arranged in rotary component 102 and go up, strengthened the cooling effect of CPU31.When stirring upper surface 108b that part 107 is set at rotary component 102 and go up, improved the efficient of pump 100.
Because pump 100 is arranged in the cooling unit 40, preferably has the pump of high cooling efficiency.In this case, stirring part 107 can be arranged on the lower surface at least of rotary component 102.Usually, portable computer 1 has been required to have done like this.Therefore, in the time of in pump 100 is installed on the electronic equipment as portable computer 1, pump is preferably thin as far as possible.In this case, stirring part 107 can only be arranged on the lower surface of rotary component 102.Therefore, be arranged on the apparent surface (upper and lower surface) of rotary component 102 and compare with stirring part 107, pump 100 can be formed like this.
In the present embodiment, shown in Fig. 4 and 7, be arranged in the impeller that constitutes on the lower surface of rotating part 102b by the stirring part 107 that will have a plurality of blades 105 and be used and make rotary component 102.
It is to be noted rotary component 102,, that is, can adopt the rotary component that will constitute on upper surface that part 107 is arranged in rotating part 102b and the lower surface by stirring at the rotary component shown in Fig. 6.When stirring upper surface 108b that part 107 is arranged in rotary component 102 and go up, as shown in Figure 6, stir part 107 and preferably be arranged on the surface, pinnacle of projection 109, and stir part 107 and can be arranged in the zone that is different from surface, projection 109 pinnacle.
In addition, as long as rotary component can agitated liquid, the liquid refrigerant in the pump chamber 118 for example, and outside that can be from the delivered inside liquid of pump chamber 118 to pump chamber 118, rotary component 102 is just unrestricted.Therefore, rotary component 102 is not limited to comprise the parts (impeller) of the stirring part 107 with blade 105.Rotary component 102 can comprise the stirring part 107 (Fig. 6) with for example a plurality of recessed portions 106.Even when adopting this rotary component 102, the liquid in the pump chamber 118 can be stirred, and is transported to the outside of pump chamber 118 from the inside of pump chamber 118.Rotary component 102 can comprise the stirring part 107 with groove that spirality for example is shaped.
The stator 103b that forms motor 103 is comprised in and comprises in the stator that is formed at the recessed portion 115 in first lid, 111 upper surfaces.In addition, stator 103b need arrange corresponding to rotor magnet 103a via first lid 111.Therefore, comprise the stator arrangement of recessed portion 115 on the position of rotor magnet 103a.The central position that comprises the stator of recessed portion 115 deviates from the central position of first lid 111.The control substrate that comprises recessed portion 116 is arranged on the position of the stator of avoiding comprising recessed portion 115.
The opening of recessed portion 13 is by the sealing of first lid 111, and the stator that therefore comprises recessed portion 115 is formed in the mode that enters rotor magnet 103a.That is, stator 103b coaxially is arranged in the inside of rotor magnet 103a via first lid 111.Stator 103b is electrically connected with control substrate 104.
Electricity with respect to stator 103b is led, and for example, side by side forms with power supply to portable computer 1.Lead by this electricity, rotating magnetic field produces in the edge direction of stator 103b, and magnetic field combines with rotor magnet 103a magnetic.The result is that the rotating torques that extends along the edge direction of rotary component 102 produces between stator 103b and rotor magnet 103a, and makes rotary component 102 rotations.
Second lid 112 is fixed in the upper surface of first lid 111.Stator 103b and control substrate 104 are covered by second lid 112.Second lid 112 is to be used to suppress that liquid refrigerant leaks or the lid of evaporation, and by metallic material for example aluminum alloy form.It is pointed out that second lid 112 can be omitted.
The pump 100 of Xing Chenging is placed on the printed circuit board (PCB) 30 by this way, so that from top covering CPU31.As shown in FIG. 7, the pump case 101 of pump 100 is fixed on the diapire 11a of first housing 10 together with printed circuit board (PCB) 30.Diapire 11a has lug boss 17 on the position corresponding to four bights of pump case 101.Lug boss 17 from diapire 11a to upper process.Printed circuit board (PCB) 30 is stacked on the surface, pinnacle of lug boss 17.It is pointed out that reference character 34 expression stiffening plates in Fig. 7, it reinforces printed circuit board (PCB) 30 from lower surface.
Pump 100 is connected on the diapire 11a of first housing 10 by this way, makes to come from top covering CPU31 by following bindiny mechanism.Recessed portion 141 is arranged in four bights of pump case 101.The diapire (bight of hot dash receiver 122) of determining recessed portion 141 has through hole 142, and cylindrical insert 143 is by this through hole.Inserts 143 has in the horizontal direction along the outwards outstanding projection 143a of the edge direction of inserts upper end.Inserts 143 has the groove part 143b that extends along edge direction.
Pump 100 is as described below to be forced on the CPU31 by this bindiny mechanism.At first, inserts 143 passes helical spring 144.This inserts 143 is inserted into from the open end that is open upwards of first lid, 111 recessed portions 141, and the hot joining that groove part 143b is positioned at pump 100 is received under the surperficial 122a.Prevent that the C shape ring 145 that drops is installed on groove part 143b.Therefore, when the direction that is separated along the diapire with definite recessed portion 141 by helical spring 144 as projection 143a was pushed, inserts 143 was connected on the pump 100.
Conduction grease (not shown) is applied in upper surface or zone that the hot joining corresponding to IC chip 33 is received surperficial 122a of IC chip 33, and the hot joining of pump case 101 is received surperficial 122a towards IC chip 33 layouts.Screw rod 146 is threaded in the lug boss 17 on the printed circuit board (PCB) 30 by inserts 143.Therefore, inserts 143 is fixed on the lug boss 17, and the elasticity of pump 100 by helical spring 146 is forced on the IC chip 33.Therefore, IC chip 33 is received on the surperficial 122a via the hot joining that the conduction grease is thermally connected to pump case 101.
In this portable computer 1, pump 100 is fixed on the printed circuit board (PCB) 30 by this way, makes the center (hot joining is received the center of surperficial 122a) of pump case 101 consistent with the center of IC chip 33.On the other hand, the center of rotary component 102 (running shaft 102a) center of departing from pump case 101.Therefore, the misalignment of IC chip 33 is via the center of the rotary component 102 of pump case 101 object chips.Thereby the more heat that comes from IC chip 33 can be absorbed by liquid refrigerant.That is to say that in order to absorb more heat by liquid refrigerant from IC chip 33, IC chip 33 preferably is arranged to towards liquid refrigerant via the mobile fast position of pump case 101.The liquid refrigerant that rotation by rotor magnet 103a produces mobile becomes fast away from the center of rotary component 102.Therefore, by this structure, the more heat that comes from IC chip 33 can be absorbed by liquid refrigerant.
As shown in Figure 3, radiator portion 50 comprises radiator portion main body 51 and a plurality of radiating fin 57 that are thermally connected to radiator portion main body 51.Radiator portion main body 51 comprises the pipe that liquid refrigerant is flowing in U-shaped basically wherein.Radiator portion main body 51 has refrigerant inlet 54 and refrigerant outlet (not shown, be arranged in the drawing interior surface from refrigerant inlet in Fig. 3) by this way, makes refrigeration agent in internal flow.That is to say that the pipe of U-shaped opening end constitutes refrigerant inlet 54 basically, and another opening end constitutes refrigerant outlet.That is, the pipe of radiator portion 50 (hot joining receiving portions main body 51) is formed the part (peripheral passage 60 will at length be told about hereinafter) of peripheral passage 60.
Radiator portion main body 51 is comprised in first housing 10 with a kind of attitude (laterally placing attitude), and this attitude makes that by the pipe half-twist acquisition of U-shaped basically refrigerant inlet 54 is arranged in top and refrigerant outlet is arranged in the bottom.Radiating fin 57 is that for example aluminum alloy and copper form by the metallic material of for example high thermoconductivity.Radiating fin 57 forms the square plate shape.Radiating fin 57 each intervals distance be arranged in parallel.Each radiating fin 57 is soldered on the radiator portion main body 51.
Radiator portion 50 is comprised in first housing 10 with a kind of attitude, and wherein radiating fin 57 is arranged towards the exhaust port 15 of first housing 10.Pair of brackets 58 is soldered on the radiator portion 50.These supports 58 are fixed to from the outstanding lug boss (not shown) of the diapire 11a of first housing 10 by screw.Therefore, radiator portion 50 is fixed on the diapire 11a of first housing 10.
Peripheral passage 60 comprises the pipe (radiator portion main body 51) of first pipe, 61, second pipe 62 and radiator portion 50.That is, radiator portion main body 51 has the function of radiator portion 50 and peripheral passage 60.First pipe, 61 discharge tubes 132 with pump 100 are connected on the refrigerant inlet 54 of radiator portion 50.Second pipe, 62 suction pipes 131 with pump 100 are connected on the refrigerant outlet of radiator portion 50.Therefore, liquid refrigerant is by the circulation between pump 100 and radiator portion 50 of first pipe, 61 and second pipe 62.
Electric fan 70 carries cooling airs to radiator portion 50, and is arranged in before the radiator portion 50 and with radiator portion and is close to.Electric fan 70 comprises fan guard 71 and the receded disk impeller 72 that is included in the fan guard 71.Fan guard 71 has the exhaust port 71a of discharging cooling air.Exhaust port 71a is connected on the radiator portion 50 via airduct 73.
For example, open or the temperature of CPU31 when reaching predetermined temperature when the power supply of portable computer 1, receded disk impeller 72 is by motor rotation/driving (not shown).Therefore, cooling air is supplied to radiator portion 50 from the exhaust port 71a of fan guard 71.
Next will tell about the operation of refrigeration plant 40.
Between the spreadable life of portable computer 1, the IC chip 33 of CPU31 produces heat.Receive surperficial 122a by the heat of IC chip generation via the hot joining of pump 100 and be transmitted to pump case 101.Because the recessed portion 113 of pump case 101 (pump chamber 118 and reserve tank 119) is liquid refrigerant abrim, liquid refrigerant absorbs a large amount of heat that pump case 101 is given in conduction.
Electricity to the stator 103b of motor 103 is led, and for example forms with opening side by side to the power supply of portable computer 1.Therefore, between stator 103b and rotor magnet 103a, produce rotating torques, and magnets of stator 103a is with rotary component 102 rotations.When rotary component 102 rotations, the liquid refrigerant in pump chamber 118 is pressurized, discharges from discharge tube 132, and is imported into the radiator portion 50 via first pipe 61 from liquid refrigerant inlet 54.In pump case 101 by the heated liquid refrigerant of heat exchange, in radiator portion 50, from liquid refrigerant inlet 54, circulate, and the heat that comes from IC chip 33 that absorbs by liquid refrigerant is transmitted to radiating fin 57 in this process towards refrigerant outlet.
When the impeller 72 of electric fan 70 rotated between the spreadable life of portable computer 1, cooling air blowed to radiator portion 50 from the exhaust port 71a of fan guard 71.This cooling air passes through among radiating fin arranged adjacent one another 57.Therefore, radiating fin 57 and radiator portion main body 51 are cooled, and a large amount of heat that is transmitted to radiating fin 57 or radiator portion main body 51 dumps in the cooling air flow, and are discharged into the outside of first housing 10 from exhaust port 15.
Led the suction pipe 131 of pump case 101 via second pipe 62 by the liquid refrigerant of radiator portion 50 coolings.This liquid refrigerant turns back to the reserve tank 119 from suction pipe 131.The liquid refrigerant that turns back to reserve tank 119 absorbs the heat that comes from IC chip 33 once more, is inhaled into simultaneously in the pump chamber 118.When this circulation was repeated, the hot adjoining land that comes from IC chip 33 was sent to radiator portion 50, dumped in the cooling air flow by radiator portion 50, and was discharged into the outside of first housing 10.
As mentioned above, the pump 100 of present embodiment comprises hot dash receiver 122 that is thermally connected to the heater element that comprises CPU31 and the pump case 101 with pump chamber 118, and liquid refrigerant is comprised in the pump chamber.That is, pump 100 has the function of hot joining receiving portions and the function of heat-exchanging part.Therefore, pump 100 can preferably be used to be installed in the above-mentioned refrigeration plant 40 on the portable computer 1.
In addition, in pump 100, be rotated parts 102 towards the zone of the rotor magnet of pump chamber 118 at least and cover.Particularly, the rotary component 102 that is formed by resin is molded and forms by covering rotor magnet 103a.Therefore, rotor magnet 103a does not contact the liquid refrigerant in the pump chamber 118.Therefore, rotor magnet 103a can prevent to be corroded by liquid refrigerant.Thereby, can prevent by liquid refrigerant motor 103 performance decrease that the corrosion of rotor magnet 103a causes, maybe can prevent the decline of the cooling effect that the pollution of liquid refrigerant causes.Therefore, according to pump 100, be cooled to the endurance satisfactorily as the heater element of CPU31.
In addition, on the surface in lower surface 108a and upper surface 108b, pump 100 comprises the rotary component 102 of the stirring part 107 with the liquid refrigerant that is used for stirring pump chamber 118.Therefore, pump 100 can be formed thinner than the pump that comprises impeller, is furnished with blade on the edge surface of described impeller.
In addition, in pump 100, the stirring part 107 that is used for stirring the liquid refrigerant of pump chamber 118 only is arranged in the lower surface 108a of rotary component 102.Therefore, pump 100 can cool off the heater element as CPU31 effectively, and with stir the upper and lower lip-deep situation of lower surface 108a that part 107 is arranged in rotary component 102 relatively, it can be formed thinner.
In addition, in pump 100, projection 109 is along the edge placement of the upper surface 108b of the rotating part 102b of rotary component 102, and to upper process.In addition, rotor magnet 103a is arranged in the projection 109.Therefore, when stator 103b was arranged in the projection 109, motor 103 can be formed by rotor magnet 103a and stator 103b at an easy rate.Even when rotor magnet 103a was arranged in the rotary component 102, rotary component 102 can rotate satisfactorily therefore.
In addition, the portable computer 1 of present embodiment comprises the radiator portion 50 of discharging CPU31 heat; Refrigerant conveying is to the pump 100 of radiator portion 50; And between pump 100 and radiator portion 50 peripheral passage 60 of circulation liquid refrigerant, and heat is transmitted to radiator portion 50 via liquid refrigerant from CPU in this peripheral passage.Therefore, CPU31 can be cooled off by the portable computer 1 of present embodiment on endurance ground satisfactorily.
Second embodiment of the present invention tells about in detail with reference to Fig. 8.
Be arranged in pump 100 in the portable computer 1 of present embodiment at the pump 100 that is different from first embodiment aspect the rotor magnet 103a sectional shape.In the present embodiment promptly, rotor magnet 103a forms by this way so that have the sectional shape of the flattened rectangular of magnet, its with running shaft 102a with the length on the direction of right angle intersection greater than the length on the direction parallel with running shaft 102a.It is pointed out that other structure is identical with first embodiment who comprises the part (not shown), and therefore represent, and omitted unnecessary narration with identical reference character.
In the pump 100 of present embodiment, rotor magnet 103a forms in the sectional shape mode with flattened rectangular, its with running shaft 102a with the length on the direction of right angle intersection greater than the length on the direction parallel with running shaft 102a.Therefore, can reduce the rising height of the projection 109 of rotary component 102.Thus, according to the pump 100 of present embodiment, as the heater element of CPU31 can with identical mode in first embodiment's pump 100, be cooled satisfactorily to the endurance.Therefore, compare with first embodiment's pump 100, this pump can form thin.
In addition, according to the portable computer 1 of present embodiment, can be cooled satisfactorily to the endurance in identical mode in first embodiment's pump 100 as the heater element of CPU31, and compare with first embodiment's portable computer 1, it can be made into to approach.
It is pointed out that in first and second embodiments' pump 100, stir part 107 and only be arranged on the lower surface 108a of rotary component 102, can be arranged at least one surface among lower surface 108a and the upper surface 108b but stir part 107.That is, stirring part 107 can only be arranged on the upper surface 108b of rotary component 102.
In addition, pump of the present invention can be employed widely, not only as the electronic equipment of portable computer be installed in the cooling unit on the equipment, also can be used in other the equipment.
In addition, electronic equipment of the present invention is not limited to portable computer, can also be widely used in the equipment of heater element and the cooling unit that comprises cooling heating element.

Claims (4)

1. an electronic equipment (1), it comprises:
Housing (10), described housing have heater element (31); And
Cooling unit (40), described cooling unit comprises radiator portion (50), be thermally connected to the peripheral passage (60) of described radiator portion (50), make the circulation of fluid in the described peripheral passage (60) forcibly and have the pump (100) of the hot joining receiving portions (122) that is thermally connected to described heater element (31)
It is characterized in that described pump (100) comprising:
Pump case (101), described pump case have hot joining receiving portions (122) and pump chamber (118);
Stator (103b); And
Rotary component (102), described rotary component has the stirring part (107) that is used for stirring the fluid in the described pump chamber (118) and is included in magnet (103a) in the described rotary component (102), and described rotary component (102) arrives described FLUID TRANSPORTATION in the described peripheral passage (60).
2. according to the described electronic equipment of claim 1 (1), it is characterized in that, described rotary component (102) has axle (102a), and is arranged in the described pump chamber (118) with this posture, thereby the axis of described axle (102a) and described hot joining receiving portions (122) are intersected.
3. according to the described electronic equipment of claim 2 (1), it is characterized in that, described magnet (103a) forms by this way, so that have the sectional shape of rectangle, this rectangle with described axle (102a) with the length on the direction of right angle intersection greater than the length on the direction parallel with described axle (102a).
4. according to the described electronic equipment of claim 3 (1), it is characterized in that described rotary component (102) has the rotating part (102b) of disc-shape,
Described rotating part (102b) has projection (109), this projection along with arrange towards the peripheral edge of the surperficial facing surfaces of described hot joining receiving portions (122) and to outstanding in the opposite direction with the side of described hot joining receiving portions (122),
Described magnet (102a) is arranged in the described projection (109).
CNA2005100652909A 2004-04-28 2005-04-19 Electronic apparatus having the pump Pending CN1690438A (en)

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JP2004133537A JP2005315159A (en) 2004-04-28 2004-04-28 Pump and electronic equipment
JP2004133537 2004-04-28

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